Why was it underwhelming?
Well, just as said previously, it was like opening a preheated oven. A preheated oven often had 200°C hot air coming out of it, double the temperature of boiling water.
In a way, this was insanely hot.
However, the only thing a human did when confronted with such a blast was to feel discomfort and maybe protect their face.
That was it.
And in return, Shang's arm nearly got frozen.
In short, this ability was supremely useless. It would only be useful as a way to cool Shang's arm after unleashing the Ice Mana from his arm, and maybe also to use it as a way to move around with the backdraft.
'Well, now that I think about it. It's actually not as useless as I've thought. I can use my ability more, and being able to move around in the air can give me far more flexibility. There's certainly something I can do with this,' Shang thought.